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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5.     int n;
  6.     cin>>n;
  7.     int *x = new int [n];
  8.     for ( int i=0; i<n; i++ ) {
  9.         cin>>x[i];
  10.     }
  11.     int num=0;
  12.     for ( int i=0; i<n; i++ ) {
  13.         if (x[i]>0 ) {
  14.             num++ ; 
  15.         }
  16.     } 
  17.     if (num == 0) {
  18.         cout<<"NO";
  19.     }
  20.     if ( num != 0 ) {
  21.     	cout<<num;
  22.     }
  23.     cout<<endl;
  24.     for ( int i=0; i<n; i++ ) {
  25.         cin>>x[i];
  26.     }
  27.     for ( int i=0; i<n; i++ ) {
  28.         if ( x[i]>0 ) {
  29.             cout<<x[i]<<" ";
  30.         }       
  31.     }
  32. }
  33.  
Success #stdin #stdout 0s 5320KB
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stdin
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Standard input is empty
stdout
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NO
https://ideone.com/T9OYco
language:
C++14 (gcc 8.3)
created:
14 hours ago
visibility:
public

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